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Finding the Fourth Proportional to 8,571.52, 12,858.90 and 2,729.80

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Solution

The fourth proportional to 8,571.52, 12,858.90 and 2,729.80 is: 4,095.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.52 : 12,858.90 = 2,729.80 : x
  2. Step 2: Convert to fraction form
    8,571.52/12,858.90 = 2,729.80/x
  3. Step 3: Cross multiply
    8,571.52x = 12,858.90 × 2,729.80
  4. Step 4: Simplify right side
    8,571.52x = 35,102,225.22
  5. Step 5: Solve for x
    x = 35,102,225.22/8,571.52
  6. Step 6: Final answer
    x = 4,095.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.